Crushing roll construction



Dec. 22, 1936. a. E. KRIDE'R 2,065,471

CRUSHING ROLL CONSTRUCTION I I Filed March 11, 1936 2 Sheets-Sheet l Invenlor eorje Eff radar gfznwjlmm 5 A Home}:

Dec. 22, 1936. GJE. KRIDER 6 7 CRUSHING ROLL CONSTRUCTION Filed March 11, 1936 2 Sheets-Sheet 2 2 :74 w a 5" 3 I Q ,7fl J Z I Inventor A florneys Patented Dec. 22, 1936 UNITED STATES PATENT OFFICE CRUSHING ROLL CONSTRUCTION burg, Pa.

Application March 11, 1936, Serial No. 68,335

1 Claim.

This invention appertains to new and useful improvements in crushing mills and more particularly to a novel crushing roll.

The principal object of the present invention is to provide a crushing roll whereby the crushing face thereof is divided into a plurality of replaceable segments connected to the roll proper by quick detachable means.

During the course of the following specification other important objects and advantages of the invention will become apparent to the reader.

In the drawings:

Figure 1 represents a fragmentary vertical sectional view through the mill equipped with the novel rolls.

Figure 2 represents an end elevational view of one of the roll hubs.

Figure 3 is a longitudinal sectional view through one of the complete rolls with one of the sections and its retaining means removed.

Figure 4 is a plan view of one of the segments.

Figure 5 is an end elevational view of one of the segments.

Figure 6 is a longitudinal sectional view of one of the segments.

Figure 7 is an end elevational view of one of the spring cups.

Figure 8 is a side elevational view of one of the spring cups.

Referring to the drawings wherein like numerals designate like parts, it can be seen in Figure 1, that numeral 5 generally refers to a conventional mill consisting of the hopper 6 and the casing 'I for the rolls generally referred to by numeral 8. These rolls are mounted on a shaft 9 and as each is of the same construction, a description of one will suffice for both. The roll consists of the hub construction consisting of the tubular body In having the circumferentially extending formation I I provided at equal spaced intervals with recesses I2. Longitudinally extending and tapering openings I3 extend longitudinally through the portion I I of the hub, merging with the pocket I2 as shown in Figure 3. In the large end of each of these openings which are narrow, is a circular grooveway I4 and longitudinally extending lateral grooveways I5 accommodate in each of these openings I3 the laterally disposed lugs I6 of the spring retaining cup II. The cup 1s inserted and then rotated so that the lug I6 will ride in the circular grooveway M in oifset relation to the grooves I5. Thus the spring I8, one end portion of which is held in the cup I! is retained impinging against the elongated tapering wedge member I9 which extends in the opening I3 and across the pocket I2 in which, when the segment 20 is properly positioned is received the longitudinally apertured ear 2|. The aperture in the ear 2I is provided with an inclined fioor 22 against which the wedge I9 bears.

It can be seen, that with the wedge I9 constantly held against this inclined floor 22 of the ear III by the constant tension of the spring I8, the 10 segment 20 and in fact the other segments held in like manner will be held in snug engagement against the outside of the hub body II.

These segment plates 20 can be suitably corrugated or milled as at 23 on their outer face. 15

To permit turning of the cup I! in the opening I3, a diametrical flange 24 is provided on the closed end of the cup. It is to be understood that the invention can be incorporated in crushers of either single, double or multiple roll construction.

While the foregoing specification sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and material may be resorted to without departing from the spirit or scope of the invention as claimed hereinafter.

Having thus described the invention, what is claimed as new is: v

A crushing roll comprising a rotor structure 30 provided with longitudinal extending tapered openings therein, said rotor being provided with pockets intersecting the said openings, segmental periphery plates for disposition around the rotor and provided with apertured ears for dispo- 35 sition into the pockets so that the apertures thereof will register with the opening, wedge members disposed in the tapered opening and through the said ears, thesaid rotor being provided in each of the tapered openings at the enlarged end thereof with longitudinally extending grooves, short circumferentially extending grooves intersecting the longitudinally extending grooves each of the said circumferentially extending grooves being provided with a longitudinally disposed notch, a cup-shaped member for disposition in each of the longitudinally extending grooves, a spring disposed in each of the cups and adapted to imprint against the adjacent end of the corresponding wedge, each of the said cups being provided with a pair of laterally disposed lugs engageable into the tapered openings and into the circumferential grooves and adapted to seat in the said notches.

GEORGE E. KRIDER. 

